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https://issues.apache.org/jira/browse/NETBEANS-6362?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17468997#comment-17468997
 ] 

Benjamin Asbach commented on NETBEANS-6362:
-------------------------------------------

[~BeepBoop] Can you please provide more context like NetBeans version, used 
JDK, Windows / Linux / MacOS.

> Trying to start my first project and it gives A 
> java.util.concurrent.ExecutionException exception has occurre
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: NETBEANS-6362
>                 URL: https://issues.apache.org/jira/browse/NETBEANS-6362
>             Project: NetBeans
>          Issue Type: Bug
>            Reporter: Casey
>            Priority: Major
>
> Im in a programing class and we just switched from Alice to this to start 
> learning java coding. Here's how im sarting it and heres what my teacher says 
> should be happening  (Sorry if im missing important info I have no clue what 
> Im doing lol) 
> !https://asset-cdn.schoology.com/system/files/imagecache/lightbox_preview/attachments/files/m/202201/1204/1204714555/NetBeans_Instructions_pic_61d4a208de2e6.PNG!
> After I hit next I name it HelloWorld and set the Create main class as 
> Program then I hit finish and then it dosnt open and gives me the error.
> java.lang.ClassNotFoundException: com.sun.tools.javac.api.JavacTaskImpl 
> starting from ModuleCL@79b35add[org.netbeans.modules.java.source.base] with 
> possible defining loaders null and declared parents 
> [ModuleCL@7c46158e[org.netbeans.libs.lucene], 
> ModuleCL@5cd7470d[org.netbeans.api.scripting], 
> ModuleCL@395613c9[org.netbeans.libs.javacimpl], 
> ModuleCL@76a42da2[org.netbeans.modules.java.lexer], 
> org.netbeans.JarClassLoader@3d68cc3a, 
> ModuleCL@2e94140f[org.netbeans.api.java.classpath], 
> org.netbeans.MainImpl$BootClassLoader@7291c18f, 
> ModuleCL@5c709b14[org.netbeans.modules.editor.settings], 
> ModuleCL@4bcbd048[org.netbeans.modules.editor.document], 
> ModuleCL@41660a[org.netbeans.modules.parsing.indexing], ...20 more]
>     at org.netbeans.ProxyClassLoader.doFindClass(ProxyClassLoader.java:215)
>     at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:125)
>     at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
> Caused: java.lang.NoClassDefFoundError: com/sun/tools/javac/api/JavacTaskImpl
>     at 
> org.netbeans.modules.java.source.indexing.JavaBinaryIndexer$Factory.createIndexer(JavaBinaryIndexer.java:222)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.indexBinary(RepositoryUpdater.java:3082)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork$3.call(RepositoryUpdater.java:5340)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork$3.call(RepositoryUpdater.java:5311)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$4.run(RepositoryUpdater.java:2127)
>     at org.openide.util.lookup.Lookups.executeWith(Lookups.java:279)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.runInContext(RepositoryUpdater.java:2123)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.runInContext(RepositoryUpdater.java:2112)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.access$2100(RepositoryUpdater.java:136)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork.scanBinary(RepositoryUpdater.java:5369)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork$1.apply(RepositoryUpdater.java:5276)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork$1.apply(RepositoryUpdater.java:5273)
>     at 
> org.netbeans.modules.parsing.impl.indexing.IndexBinaryWorkPool$Task.call(IndexBinaryWorkPool.java:181)
>     at 
> org.netbeans.modules.parsing.impl.indexing.IndexBinaryWorkPool$Task.call(IndexBinaryWorkPool.java:162)
>     at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
> Caused: java.util.concurrent.ExecutionException
>     at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)
>     at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)
> [catch] at 
> org.netbeans.modules.parsing.impl.indexing.IndexBinaryWorkPool$ConcurrentStrategy.execute(IndexBinaryWorkPool.java:142)
>     at 
> org.netbeans.modules.parsing.impl.indexing.IndexBinaryWorkPool.execute(IndexBinaryWorkPool.java:67)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork.scanBinaries(RepositoryUpdater.java:5290)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$RootsWork.getDone(RepositoryUpdater.java:5038)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$InitialRootsWork.getDone(RepositoryUpdater.java:5823)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doTheWork(RepositoryUpdater.java:3422)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task._run(RepositoryUpdater.java:6185)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.access$4300(RepositoryUpdater.java:5836)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$2$1.run(RepositoryUpdater.java:6101)
>     at org.openide.util.lookup.Lookups.executeWith(Lookups.java:279)
>     at 
> org.netbeans.modules.parsing.impl.RunWhenScanFinishedSupport.performScan(RunWhenScanFinishedSupport.java:83)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$2.call(RepositoryUpdater.java:6097)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$2.call(RepositoryUpdater.java:6093)
>     at 
> org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:153)
>     at 
> org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:335)
>     at 
> org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:118)
>     at 
> org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:67)
>     at 
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.run(RepositoryUpdater.java:6093)
>     at 
> java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
>     at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
>     at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
>     at 
> org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
>     at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)
>     at 
> org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)



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